Door frame heating method, device and system of test box

Abstract

The embodiment of the invention discloses a door frame heating method, device and system of a test box. The door frame heating method of the test box comprises the steps of acquiring the in-box temperature and the external environment temperature of the test box; according to the in-box temperature and the external environment temperature, determining a first difference value between the in-box temperature and the maximum value of a preset in-box temperature range and a second difference value between the external environment temperature and the minimum value of a preset environment temperature range; and according to the preset in-box temperature range, the preset environment temperature range, the first difference value and the second difference value, determining the door frame heating amount of the test box so as to heat the door frame of the test box. According to the door frame heating method, device and system of the test box provided by the embodiment of the invention, the reliability of door frame heating can be improved.

Description

technical field [0001] Embodiments of the present invention relate to temperature control technology, in particular to a method, device and system for heating a door frame of a test chamber. Background technique [0002] As test chambers such as environmental test chambers are more and more widely used in various industries, the requirements for product use experience and safety are also getting higher and higher. Different products have different testing requirements. When the environmental test chamber is working, the lowest temperature inside the chamber can be as low as -70°C. When the environmental test chamber operates at low temperature, part of the cooling energy will be conducted out of the chamber through the structural parts. Due to the difference in the production process and the use of heat-insulating materials, the cold energy transmitted from the door frame and window frame of the environmental test chamber may cause condensation or frost, so the door frame of...

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Problems solved by technology

[0003] At present, the existing method of heating the door frame of the test chamber is usually to heat the door frame when the temperature in the test chamber is lower than 8°C. However, due to different low temperature test requirements of different products, different external environments, and even different seasons , the heating amount of the heating wire for heating the door frame cannot be automatically adapted, which will make it difficult to control the surface temperature of the door frame. If the condensation cannot be effectively removed, the device door frame will drip water or the surface temperature will be high, and it may even burn nearby staff, affecting the reliability of heating. sex

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